Welt holding mechanism



Sept- 1938. 1 w. c. CARD, JR

WELT HOLDING MECHANISM Filed Oct. 19, 1934 5 Sheets-Sheet l M TTO A) NVENTOR Md, W RNEYsI I Sept. 27, 1938. w. c. CARD, JR 2,131,370-

WELT HOLDING MECHANI SM Fj Ied OQt. 19, 1934 3 Sheets-Sheet 2 Sept. 27, 1938.

W. C. CARD, JR

WELT HOLDING. MECHANISM 5 Sheets-Sheet 3 Filed Oct. 19. 1934 Maw 5:"2551? BY 41%, M

ATTOR Patented Sept. 27, 1938 UNITED. STATES WELT HOLDING MECHANISM William 0. Card, Jr., Winthrop, Mass, assignor to Compo ShoeMachinery Corporation, New 7 York, N. Y., a corporation of Delaware Application October '19, 1934, Serial.,No. 748,981 17 Claims. (01. 12-33) This invention relates to the manufacture of shoes, and more particularly to an apparatus for holding down the welt extension of a shoe when pressure is applied to its bottom, as during a channel laying, sole comforming or sole affixing operation.

A general object of the invention is to provide an improved welt hold-down apparatus to be used in conjunction with pressure applying device such as sole presses and the like.

More particularly the invention has for its objects the provision of a welt hold-down device which is in the form of a unit readily attachable to existing forms of shoe presses, is easy to operate and control, readily adjustable, compact and relatively simple and inexpensive in structure, and in general is highly practical and satisfactory in operation.

Other objects of the invention will in part be obvious and will in part appear hereinafter. v

The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts, which will be exemplified in the construction hereinafter set forth and the scope of the application of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention reference should be had to the following detailed description taken in connection with the accompanying drawings, in which: i

Fig. 1 is a plan view of a shoe press equipped with one form of a welt hold-down device constructed in accordance with the principles of the present invention, part of the upper portion of the press being broken away more clearly to illustrate the welt hold-down structure;

Fig. 2 is a side elevation of the press shown in Fig. 1, parts thereof being shown in longitudinal sections corresponding to line 22 of that figure;

Fig. 3 is a horizontal sectional view, substantially corresponding to line 3-3 of Fig. 2 but showing the welt hold-down equipment in open position;

Fig. 4 is a transverse vertical sectional View across a shoe press, substantially corresponding to line 4-4 of Fig. 3;

Fig. 5 is a plan view of a press equipped with another form of welt hold-down device, the upper portion thereof being broken away along line 5-5 of Fig. 6 bettertoillustrate the welt holddown construction; l i

Fig. 6 is a side elevation of the press shown-in Fig. 5, parts thereof being broken away substan tially along hne 66 of that figure; and

- Fig. 7 is a transverse vertical sectional view, taken substantially'along line 1-1 of Fig.5.

A very satisfactory type of cemented shoe can be made by following the lasting operations customarily used in the manufacture of sewed welt ';5 shoes up until'the time of applying the outer sole, which latter then is cementedto the welt on the upper instead of being stitched thereto. Such cement aifixing operationis accomplished in an inflatable press of the kind' customarily 10 used in the application of outer soles to cemented shoes. When pressure is'thus applied to 'the bottom of the outer sole, itis desirable that some means'of supportbe given the welt extension which projects beyond the body of the upper in 1.5 order to prevent this extension from being rolled or curved by the pressure pad and also to assure firm cement adhesion between such extension and the outer sole. Such a supporting means also is desirable in so-le afiixing ordinary cemented shoe's'which are not equipped with a welt in order to prevent rolling of the sole extension.

. In sole conforming operations, and in channel laying operations on sewed shoes, it is also desirableto support the welt extension against pres- 5 sure applied to the bottom of the outer sole.

The'present d'evice'is intended to provide such a welt extension supporting means and is: useful in any operation such-as those mentioned. Accordingly, while for convenience of reference, .30 terms such as weltextension and welt crease are used in the present description and claims, it isintended that these terms shall, wherever the context permits, refer to the marginal portion of an extension edge of theouter sole, re- .35 gardless of whether or not the shoe is of the welt type. 1

Referring more particularly'to the drawings, there is shown a shoe press having a base portion l0 and a rigid bow member H from which ex- 40 tend a toe post l2 and a heel post 13. Aninfiatable pressure applying pad I4 is positioned in the base portion In and is adapted to be blown up and inflated in any suitable manner in order to apply pressure to the bottom of a shoe seated thereon. p v

In the form here illustrated, the toe post l2 has a threaded shank, the upper portion of which is screwed into the bow member I I, its vertical posi-: tion with respect thereto being determined by a lock nut l 5; A welt hold-down device is mounted asa unit on the downwardly projecting'portion of this toe post ".Such device includes a collar or'sleeve [6 which threaded over the toe postand has-its vertical location thereon determined by a lock nut I I. A support I8 is swingably suspended from collar I6 by means of threaded trunnions I9 and 20 which are insertable through laterally extending threaded openings in an upwardly projecting boss 2| of support I8. By virtue of this suspension, support I8 is able to rock forwardly and rearwardly about an axis extending transversely of the press.

The support has a forwardly projecting tongue 22 having a longitudinally extending elongate slot 23. The support is further equipped with laterally extending wings 24 and 25, which have elongate slots 26 and 21. The slots 21 extend generally in a longitudinal direction and are roughly of segmental or triangular shape, each having its narrower end disposed rearwardly. A pair of aligned arms 28 and 29 are respectively disposed above and below the slot 21 of wing 25 and are pivoted to such wing adjacent its narrow end by means of a pivot pin 36. The arms 28 and 29 thus are able to swing across the segmentally shaped slot 21. Each of the arms 28 and 29 is equipped with an elongate slot such as 3|, these slots being in substantial vertical registry.

A similar pair of arms 32 and 33 are respectively located above and below the slot 26 of support wing 24 and are swingable thereacross by virtue of a pivot 34 located adjacent the narrow end of such slot. Arms 32 and 33 each have an elongate slot 35, the slots in the two arms being in substantial vertical registry.

A post 36 extends slidably through the forward slot 23 of the support I8 and terminates at its lower end in a pivot pin portion 31 on which are pivotally mounted the forward ends of a pair of welt crease engaging platens 38 and 39. These platens are mutually configured to extend within the welt crease around the forepart of a shoe positioned in the press and, as explained, are hinged at their forward ends about the lower end of post 36 in order that they may be opened and closed with respect to the shoe. These platens are prevented from dropping oil the lower end of post 36 by means of a resilient retaining clip 40 which is anchored to the platen 39 and engages over a flange 4| which is fixedly located on post 36. An additional post 42 extends slidably through slots- 3| of arms 28 and 29 and has its lower end terminating in a pin portion 43 which extends rotatably within a suitable opening provided therefor adjacent the free or rearward end of platen 39. This end of the platen is prevented from dropping ofi pin portion 43 by means of a spring clip 44 which is anchored to the platen and seats over a flange 45 that is fixedly attached to the post 42. A similar post 46 slidably extends through the slots 35 in the swingable arms 32 and 33 located at the other side of the support I8 and has a downwardly extending pin portion 41 rotatably located in a suitable opening adjacent the rearward end of platen 38. A resilient clip 48 serves to keep this platen from dropping off pin portion 41 by seating over a flange 49 that is fixed with respect to the post 46.

A compression spring 50 surrounds the lower end of forward post 36 and reacts between such post and a washer which spans slot 23 andbears against the under side. of support I8. The wing post 42 is similarly provided with a compression, spring 52 reacting between the post and a washer 53 which spans the slot 3| of arm 29 and bears against the latter. A spring 54 similarly reacts between post 46 and a washer 55 that means of trunnions H9 and I20.

bears against the under side of arm 33. By virtue of this arrangement the platens 38 and 39 are given a normal bias downwardly toward the pressure applying pad I4 in order that they may yield upwardly if required. Undue downward movement of the posts 36, 42 and 46 with respect to the support I8 is prevented by heads 56, 51 and 58, respectively located adjacent their upper ends.

The upper ends of wing posts 42 and 46 are connected by a tension spring 59 which gives these posts a normal bias toward each other.

Near its forward or wider end the slot 26 in wing 24 is provided with a recess or shoulder 68 which accommodates post 46. All three platen support posts are slidable longitudinally along their respective confining slots 23, 3| and 35 and the wing posts 42 and 46 in addition are movable laterally within the confining limits of segmental slots 26 and 21. The platen 38 may be maintained in open position by sliding post 46 forwardly into the recess 66 where it will be held by tension of spring 59 until moved by the operator.

In operation the platens are held open in the manner just described with post 46 being located in recess 60. A shoe is then positioned on the press beneath toe post I2 and heel post I3 with its sole engaging above pressure pad I4. The operator then moves post 46 within recess 60 so as to permit the platens 38 and 39 to engage about the forepart of the shoe, at the same time guiding them into the welt crease so that they bear in supporting relation above the welt extension of the sole. The press is then inflated, thus exerting pressure against the bottom of the shoe which is counteracted in the welt extension area by platens 38 and 39. If the nature of the applied pressure should warrant it, these platens are yieldable upwardly by virtue of their resilient mounting. When shoes of markedly difierent sizes from those previously handled are to be operated on, welt crease platens of different sizes may be readily substituted by simply unhooking clips 40, 44 and 48 from their respective post flanges and dropping the platens from the lower ends of their supporting posts. New platens equipped with similar retaining clips may then readily be applied to the supporting posts.

In Figs. 5, 6 and '7, a somewhat different form of welt hold-down device is shown. Here, a press generally similar tothat described in connection with the first form is provided. It has a toe post I I2, to which is threaded a sleeve or collar I I6 to which a support H8 is swingably attached by The support I I8 has a forwardly projecting tongue I22 slotted as at I23 to accommodate a forward post I 36- The lower end of post I36 has a pivot pin portion I3'I which pivotally accommodates: the forward ends of welt crease engaging platens I36 and I39, generally similar in construction to those described in connection with the first form.

Support I I8 is provided with lateral wings I24 and I25 which are pivotally attached thereto and are adapted to be clamped in any of several desired adjusted angular positions by means of clamping bolts 6| and 62 about which the wings are respectively pivoted. These bolts are threaded into the body. portion of support I I8 and have winged heads which may be clamped down against the upper part of the respective wings I24 and I25 to hold them in fixed relation with support IIB'.

Wing I25 is provided with an elongate slot I2'I which extends in a generally oblique direction forwardly and outwardly with respect to the press, and wing I24 is provided with a similar slot I26 which latter in addition hasnear its forward end a recess I66. A leaf spring 63 is located opposite recess I66.

7 A post I42 extends slidably through slot I21 and has its lower end rotatably accommodated in an opening adjacent the free or rearward end of platen I39. A similar post I46 extends through slot I26 and has its lower end arranged to hold the free end of platen I38. Compression springs I50, I52 and I54 respectively surround posts I36, I42 and I46 and react between the latter and suitable washers, such as that shown at I5I, which bear against the under side of the support H8 and its wings I24'and I25.

The operation of this form of welt hold-down device is substantially the same as that described above, except that longitudinal movement of the platens and supporting posts along the press causes automatic opening and closing of the platens by virtue of the diagonal arrangement of slots I26 and I21. Platen I38 may be held in open position by sliding post I46 up into recess I60 where it is held by spring I63 subject to movement by the operator. A tension spring I59 joins the upper ends of posts I42 and I46 and tends normally to draw them together.

It will be seen that an apparatus has been provided which is well suited to ful'fil its intended functions and since certain changes may be made in the above construction and different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the following means including a-toe post for holding a shoe thereagainst, a support on said toe post, a pair of platons pivotally joined at their forwardends and shaped to enter the welt creaseof a shoe positioned in said press, and posts extending between said support and platens for holding the latter against the welt extension of a shoe, said support having laterally extending openings accommodating certain of said posts, such posts having loose motion connections with said support to allow opening and closing movement of said platens with respect thereto.

-2. A shoe press having a pressure applying pad, means including a toe post for holding a shoe thereagainst, a support on said toe post. a pair of platens pivotally joined at their forward ends and shaped to enter the welt crease of a.

shoe positioned in said press, posts extending between said support and platens for holding the latter against the welt extension of a shoe, said support having laterally extending openings accommodating certain of said posts, such posts having loose motion connections with said support to allow opening and closing movement of said platens with respect thereto, and resilient means between said support and platens for yieldably holding the latter against said welt exten- 3. A shoe press havinga pressure applying pad, means including a toe post for holdinga shoe thereagainst, a pair of platens pivotally joined at their forward ends, a slotted support on-said toe post, posts extending from said platens slidably through the slots in said support to permit said platens to be bodily moved with respect tosaid support, and spring means between said support and platens permitting yieldable approach therebetween.

' 4. A shoe press having a pressureapplying pad, means including a toe post for holding a shoe thereagainst, a slotted support mounted on said toe post, platens shaped to enter the welt crease at the sides and toe of a shoe positioned'on said press, and posts extendingfrom said platens slid, ably through the slots of said support, said platens and posts being movable as a unit with respect to said slotted support along the slots thereof.

5. In a shoe apparatus having means ior applyingpressure to the bottom of a shoe, a welt hold-down device comprising a slotted support, platens shaped to enter the Welt crease at the sides and toe of a shoe, posts extending from said platens through the slots of said support, said platens and posts being movable as a unit with respect to said slotted support, and means for holding said support above said pressure ap-. plying means. 7

6. In a shoe apparatus having means forapplying pressure to the bottom of a shoe, a welt hold-down device comprising a supporthaving elongate slots therein, a post extending through one of said slots, a pair of platens mutually shaped to enter the welt creaseof a shoe and pivotallyjoined at their forward ends to the lower end of said post, additional posts extending through the.

remaining slots of said support and bearing against said platens, said platens and posts being movable as a unit along said support slots, and means holding said support above said pressure applying means.

'7. In a shoe apparatus having means for applying pressure to the bottom of a shoe, a welt hold-down device comprising a support having elongate slots therein, a post extending through one of said slots, a pair of platens mutually shaped to enter the welt crease of a shoe and pivotally joined at their forward ends to the lower end of said post, additional posts extending through the remaining slots of said support and. bearing against said platens, spring means yieldably spacing said platens from said support, said platens, posts and spring means being movable as a unit along said slots, and means holding said support above said pressure applying means.

8. In a shoe apparatus having means for applying pressure to the bottom of a shoe, a welt hold-down device comprising a support having a forwardly disposed longitudinally extending elongate slot and a pair of rearwardly disposed latertudinal movement of said platens and posts effects opening and closing movement of the platens, and means for holding said support above I said pressure applying means.

9. In a shoe apparatus having means for applying pressure to the bottom of a shoe, a welt hold-down device comprising a support having a forwardly disposed longitudinally extending elongate slot and a pair of rearwardly disposed laterally opposed oblique slots, a post extending through said forward slot, a pair of platens mutually shaped to enter the welt crease of a shoe and pivotally joined at their forward ends to the lower end of said post, additional posts extending through each of said oblique slots and respectively connected at their lower ends to the free end of each of said platens, whereby longitudinal movement of said platens and posts effects opening and closing movement of the platens, means for altering the angularity of said oblique slots, and means for holding said support above said pressure applying means.

10. In a shoe apparatus having means for applying pressure to the bottom of a shoe, a welt hold-down device comprising a support having a forwardly disposed longitudinally extending elongate slot, a slotted arm pivotally mounted at each side of said support rearwardly of said forward slot, a post extending through said forward slot, a pair of platens mutually shaped to enter the welt crease of a shoe and pivotally joined at their forward ends to the lower end of said post, additional posts extending through said slotted arms and respectively connected at their lower ends to the free ends of each of said platens, and means for holding said support above said pressure applying means.

11. In a shoe apparatus having means for applying pressure to the bottom of a shoe, a welt hold-down device comprising a support having a forwardly disposed longitudinally extending elongate slot, a slotted arm pivotally mounted at each side of said support rearwardly of said forward slot, a post extending through said forward slot, a pair of platens mutually shaped to enter the welt crease of a shoe and pivotally joined at their forward ends to the lower end of said post, additional posts extending through said slotted arms and respectively connected at their lower ends to the free ends of each of said platens, spring means between said support and platens urging the latter downwardly, and means for holding said support above said pressure applying means.

12. In a shoe apparatus having means for applying pressure to the bottom of a shoe, a welt hold-down device comprising a support having a forwardly disposed longitudinally extending elongate slot and having laterally disposed openings located rearwardly of said slot, slotted arms swingably pivoted to said support so as to span hold-down device comprising a support having a forwardly disposed longitudinally extending elongate slot and having laterally disposed openings located rearwardly of said slot, slotted arms swingably pivoted to said support so as to span said openings, a post extending through said forward slot, a pair of platens mutually shaped to enter the welt groove of a shoe and pivotally joined at their forward ends to the lower end of said post, additional posts extending through said slotted arms and respectively connected at their lower ends to each of said platens, spring means connecting said additional posts tending normally to close said platens, spring means between said support and platens urging the latter downwardly, and means for holding said support above said pressure applying means.

14. In combination with a shoe press comprising a pad box, a bow member carried by and extending longitudinally over said pad box, a pressure applying pad on said pad box, a toe post and a heel post carried by said bow member for holding a shoe against said pad, said toe-post being supported in fixed relation to the pad box; a welt hold-down unit comprising platens pivotally joined at their toe ends and shaped to enter the welt crease of a shoe positioned in said press, and means resiliently mounting said platens on said toe post, said means being arranged to permit opening and closing of said platens about their pivotal joint.

15. In combination with a shoe press comprising a base, a bow member carried by and extending longitudinally over said base, a pressure applying pad on said base, and means including a threaded toe post screwed into said bow member for holding a shoe against said pad; a welt holddown unit comprising pivotally joined platens shaped to enter the welt crease of a shoe positioned in said press, a support including an internally threaded sleeve screwed on said toe post for vertical adjusting movement therealong, and means resiliently mounting said platens on said support.

16. A shoe press having a pressure applying pad, means including a toe post for holding a shoe thereagainst, a support mounted on said toe post, a pair of platens pivotally joined at their forward ends and shaped to enter the welt crease of a shoe positioned in said press, and posts mounting said platens on said support, said posts having loose motion connections with said support providing foropening and closing movement of said platens about their pivotal joint and for longitudinal movement of said platens with respect to said support.

17. In a sole attaching apparatus, a pressure pad, a cradle sustained above the pad for limited longitudinal swinging movement about an axis spaced a considerable distance above the pad and extending transversely thereof, a welt holddown suspended from the crade and positioned near the pad, and springs interposed between the holddown and the cradle to permit the holddown to yield upward toward the cradle.

WILLIAM C. CARD, JR. 

